Gollar for artificial respirators



Filed Dec. 8, 1945 F. T. NALLiN 2,478,852

' COLLAR FOR ARTIFICIAL RESPIRATORS 2 Sheets-Sheet l INVENTOR. RIM CA5 7'. A/AW V Aug. 9, 1949. F. T. WALLIN 2,478,352

COLLAR FOR ARTIFICIAL RESPIRATORS Filed Dec. 8, 1945 V v 2 Sheets-Sheet 2 INVENTOR; fw c/s 7 l/num Patented Aug. 9, 1949 o rAT Nr a 478,852" cornea s'oa ARTIFICIALRESPIRATORS i'rl-"aficisf. Willie; lir'ookline, Mass. Application December 8, 1945,- Serial No. ssaccs the body may be either the entire body or the upper portion of the body.

In apparatus of this nature; pressure within the enclosure is increased and diminished to force respiration by meanspf the contraction and expansion of the lungs The respirator for this purpose must. be sealed about its openings through which portions of; the body project, one of which portions includes the neck opening through which the neck; and head ofthe individual projects.-

Many means have heretofore been used for sealing the opening around the-neck to prevent escape of pressure. from within the respirator, but these for the most part are objectionable in that proper adjustment takestime, or because they offer difficultiesto placi-nethe patient easin the respirator;

The present invention aims to overcome these difiiculties and providesv a type of collar or neck piece which is sufficiently large so that the head ofthe patient will pass through it without any difficulty at all, after which an adjusting ring is turned until the collar or neck piece is brought down to the desired sizes for the individual in the respirator. The neck opening or collar in the present invention is susceptible of continuous adjustment orsize; so that after the patient is put in, it is simply turned until the exact adiustment is obtained. The collar. is of such a nature that it may be adjusted at. any time for tighter or looser fit, so that the patient can always he made comfortable in a very simple manner.

The invention will be more readily understood from the description in the specification below when taken in connection with the drawings illustrating an embodiment thereof; in which Figure- 1 shows an elevation of the head end of the respirator containingthe invention.

Figure 2 shows a side view as seen from the right of Figure 1-.

Figures 3 and 4 show details of the invention.

Figures 5 and 6 show two views of the collar in differently closed positions; and;

V Figure '7 shows a view of the collar in an extended position prior to complete assembly.-

Inthe arrangement shown. in the; figures; I

1 (Figixre 2) is; the body 013 the respirator which may be provided with 'a plurality of extendin bosses Z-and 3, to which a clampin ring 4 is at.- tached for holding ina tight sealed position, one end of the collar 5. The clamping ring 4 is pro: vided with a plurality of extendingarms 6 and: 1 by means of which tho ri -ng is tightened to the bosses 2 and 3 'Facing the clamping surface to which the collar is applied on the bodyof the respirator, there is a sponge rubber or other similar bearing ring 3 positioned around the hole in the respirator and attached-- by cement or other means to the body of the respirator. Lying over this clamping ring is one end of the collar which may be provided with an outwardly extending. flange 9 to face the sponge rubber clamping surfacerin 3. Thering 4 is placed over thoflange 9 of the collar and then clamping screws II) which have a neckportion turning freely in holes I I in the arms 6 and l with shoulders I2 bearing on the surface of the arms 6 and l are tightened in the projecting bosses 2 and aim which the clamping screws are threaded. These clam-ping screws may be retained inthe arms by provid ingwashers l3 attached to the shank of the screws to on the inner side of the plate 4; The plate 4 is also provided with a plurality ofstuds Id positioned concentrically with the ring 4 and of course the opening through the respirator which is also concentric with the ring 4. These studs l5 are rivctted or welded at one end to the plate 4 and hold a bushing or sleeve l5 (Figure 3) with an outwardly extending flange 16 on the endaway from the plate 4. Thestuds I4 areprovided with an inwardly extending shoulder H at their exposed ends leavingasection at the end of the studs M of smaller diameter than the rest ofthe stud. This end section I8 is threaded to receive the locking nut I 9'. The bushing I5 is therefore free to turn about the body of the stud V I l. These bushings with their extending flanges,

hold in place for free rotation the retaining ring assembly at which comp-rises two rings 2| and 22 between which the other flanged end 2-3 of the collar 5 is tightly clamped. The rings 2| and 22 with the flanged end of the collar 5 may be held together by means of aplurality of rivets 24, 24, positioned about the surface of the rings H and 22; The assembly 20 of the outer clamping ole; ments are of such a thickness that they fit in between the surface of the ring 4 and the inner side of the flanges l6 of the bushings mounted on the studs l4. The materialform' ing the rest of the collar protrudes outwardly from the clamped ends of the collar as indicated in Flt-- ure 2 with the end permanently clamped to the body of the respirator positioned inwardly of the end clamped in the movable ring. The clamping ring assembly 20 is provided with two handles 25 and 26 at diametrically opposite positions on the ring. These andles extend from hubs 21 at the center of which there is positioned a pin 28 which is spring tensioned in a manner presently-to be described and sets into recesses or holes 29, 29, etc., located all around the rin plate 4 on the same radius as the pin 28, so that the pin may engage in any of the holes 29, retaining the ring assembly 20 in its set position. The construction of the hub 21 and the pin member 28 is shown more in detail in Figure 4. The hub 21 is formed integrally or attached to the plate 30 which is held to the top ring 2| by means of the screws 3!, 3!. The pin 28 has a collar 32 attached to it operating in a recess or chamber 33 formed in the hub 21. A spring 34 acting between the top cap cover 35 of the hub and the collar 32, exerts pressure on the pin 28 to force it into the holes 29 in the plate 4. Positioned beside the hub on an ear 36 upwardly extending from the plate 36 is a lever 38 which has a handle member 39 at one end and an operating bar 40 at the other end projecting through an opening 4i in the hub at the side and extending under the collar 32 so that by pressure on the handle 39 the pin may be raised out of the recess 29 whereupon the upper ring assembly may be rotated for tightening or loosening the collar.

In Figures and 6 the collar is shown in two positions. In each of these positions, it will be noted that the collar member which is of rubber or the equivalent thereof, is pleated over with pleats extending substantially tangential to the center opening concentric with the clamping ring 6 and the movable clam-ping assembly 20.

These folds or pleats fall naturally and there is no need of any scoring in the collar so that they may be made.

As the adjustable ring assembly 20 is turned, the opening is made larger or smaller, the pleats folding around and in a manner somewhat similar to that of the familiar camera iris. It is possible to close the opening completely in this manner.

In Figure 7 the collar 5 is shown in its extended position with the clamping assembly 28 away from the clamping ringl by means of which one end of the collar is held to the respirator housing. In the assembly of the device one end of the collar is first clamped by means of the clamping ring 4 and then the ring assembly is brought to the face of the ring l with the material of the collar extending outwards from within the ring 25 as indicated in Figure 2. The bushing 20 and the clamping nut l9 may then be applied. This complete assembly is made before the patient is put in the respirator so that all that needs to be done after the patient is put in is simply to turn to ring 20 until the neck opening is adjusted to the right size to retain the pressure within the respirator.

Having now described my invention, I claim:

1. In combination, a respirator of the type described having a head opening at one end, a flexible rubber collar, means clamping one end of said collar to the head opening forming an air seal around said opening with said collar, a clamping ring in which the other end of said collar is held, and means supporting said clamping ring for permitting the same to be turned concentrically with the head opening whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator, and means for retaining said clamping ring in said position.

2. In combination, a respirator of the type described having a head opening at one end. a, flexible rubber collar, a clamping ring plate for holding one end of the collar in a fixed sealed position around the head opening of the respirator positioning said flexible collar concentrically with the head opening, a pair of clamping rings in which operating position permitting the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring and means for adjustably retaining said rotatable clamping rings in a desired position whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator.

3. In combination, a respirator of the type described having a head opening at one end, a ring plate, a flexible rubber collar having outwardly extending flanges at each end, means for clamping one flange against the respirator around the head opening with said ring plate, a clamping ring for retaining the other flange, means for hOldll'lg said clamping ring against said ring plate for rotating the same concentrically with respect to the opening in said ring plate said clamping ring when in normal operating position permitting the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring, and means for retaining said clamping ring at a selected position of rotation whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator.

4. In combination, a respirator of the type described having a head opening at one end, a flexible rubber collar, means clamping one end of said collar to the head opening forming an air seal around said opening with said collar, a clamping ring in which the other end of said collar is held, and means supporting said clamping ring for permitting the same to be turned concentrically with the head opening whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator, and means for retaining said clamping ring in said position, comprising a pin projecting through said clamping ring into said first clamping means and means for releasing said pin to permit the clamping ring to be turned.

5. In combination, a respirator of the type describedhavin a head opening at one end, a ring plate, a flexible rubber collar having outwardly extending flanges at each end, means for clamping one flange against the respirator around the head opening with said ring plate, a clamping ring for retaining the other flange, means for holding said clamping ring against said ring plate for rotating the same concentrically with respect to the opening in said ring plate said clamping ring when in normal operating position permitting the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring, and means comprising a plurality of studs positioned concentrically about said ring plate with bushings having flanges rotatable on said studs, said flanges lying over the edges of said clamping rings, and means for retaining said clamping rings at a selected position of rotation whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator.

6. In combination, a respirator of the type described having a head opening at one end, a ring plate, a flexible rubber collar having outwardly extending flanges at each end, means for clamping one flange against the respirator around the head opening with said ring plate, a clamping ring for retaining the other flange, means for holding said clamping ring against said ring plate for rotating the same concentrically with respect to the opening in said ring plate said clamping ring when in normal operating position permitting 1 the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring, and means comprising a plurality of studs positioned concentrically about said ring plate With bushings havingflanges rotatable on said studs, said flanges lying over the edges of said clamping rings, and means for retaining said clamping rings at a selected position of rotation whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator, said bushings bearing against the edge of said clamping ring.

'7. In combination, a respirator of the type described having a head opening at one end, a ring plate, a flexible rubber collar having outwardly extending flanges at each end, means for clamping one flange against the respirator around the head opening with said ring plate, said means including a plurality of arms extending from said ring plate having clamping screws threading into the head end of the respirator, a clamping ring for retaining the other flange, means for holding fill said clamping ring against said ring plate for rotating the same concentrically with respect to the opening in said ring plate said clamping ring when in normal operating position permitting the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring, and means for retaining said clamping ring at a selected position of rotation whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator.

8. In combination, a respirator of the type described having a head opening at one end, a sponge rubber ring mounted against the respirator about the head opening, a ring plate, a flexible rubber collar having outwardly extending flanges at each end, means clamping the flange at one and between said ring plate and said sponge rubber ring against the respirator about said head opening, a clamping ring for retaining the other flange, means for holding said clamping ring against said rin plate for rotating the same concentrically with respect to the opening in said ring plate said clamping ring when in normal operating position permitting the portions of the collar between the ends to extend outward from the edges of the clamping means and clamping ring, and means for retaining said clamping ring at a selected position of rotation whereby portions of the collar may overlap in pleats and the collar opening may be decreased in size to accommodate the neck of the individual placed in the respirator.

FRANCIS T. WALLIN.

REFERENCES CITED UNITED STATES PATENTS Name Date Drinker et a1. May 2, 1933 Number 

